Exec Office · Tamarind Point Utility Company

🏭 Water & Wastewater Plant Review

Corrective actions from the plant reviews, the required testing countdown and the latest water quality results. Changes are counted since Quarterly plant review (Sep 21, 2026).

📄 Report (PDF)

⬇ Excel

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They get a phone alert and a link on their first page. They can look, print the report and download the Excel; only you change it (Island Water update Island Water's findings).

Overall status: both plants 12 findings · 42% complete

5Complete · 42%3In Progress · 25%1Noted · 8%3Open · 25% 9Updated since the last review

Status by plant

Plant	Complete	In Progress	Noted	Open	Total	% Complete
Drinking Water Plant (RO Plant)	2	2	0	2	6	33%
Wastewater Plant	3	1	1	1	6	50%
Both plants	5	3	1	3	12	42%

Completion by responsible party

Party	Complete	Total	% Complete
Island Water	3	7	43%
TPU	2	4	50%
Island Water / TPU	0	1	0%

Since the last review: 9 updated · 9 with a response on file · 3 still awaiting any response.

🧪 Required testing: countdown the testing the franchise agreement requires · 1 overdue

3days overdue

Sludge analysisWastewater · due Sun Nov 1, 2026Every 6 months · last done May 1

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2days left

Effluent BOD5 / TSS (outside lab)Wastewater · due Fri Nov 6, 2026Every month · last done Oct 6

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5days left

Bacteriological sampling (distribution)Drinking water · due Mon Nov 9, 2026Every week · last done Nov 2

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19days left

Nutrients (N and P)Wastewater · due Mon Nov 23, 2026Every month · last done Oct 23

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38days left

Full chemical analysis (outside lab)Drinking water · due Sat Dec 12, 2026Every 3 months · last done Sep 12

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110days left

Lead and copper (homes)Drinking water · due Mon Feb 22, 2027Every year · last done Feb 22

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＋ Add a required test

💧 Water quality testing latest results per plant

Drinking Water Plant (RO Plant)

Mon Nov 2, 2026 · Island Water lab · Tank outlet

Parameter	Result	Limit
Free chlorine	1.27 mg/L	0.2 – 4.0	✓ Within
Total chlorine	1.09 mg/L	≤ 4.0	✓ Within
pH	7.2	6.5 – 8.5	✓ Within
Turbidity	0.13 NTU	≤ 1.0	✓ Within
TDS	288 mg/L	≤ 500	✓ Within
Conductivity	402 µS/cm
Total coliform	Absent per 100 mL	Absent	✓ Within
E. coli	Absent per 100 mL	Absent	✓ Within

Wastewater Plant

Mon Nov 2, 2026 · Island Water lab · Effluent to pond

Parameter	Result	Limit
BOD5	10 mg/L	≤ 30	✓ Within
TSS	9 mg/L	≤ 30	✓ Within
pH	7.1	6.0 – 9.0	✓ Within
Ammonia (NH3-N)	0.8 mg/L
Total nitrogen	6.5 mg/L
Total phosphorus	2.1 mg/L
Fecal coliform	138 per 100 mL
Turbidity	2.10 NTU

Earlier tests (21)

Nov 2, 2026 · Wastewater Plant · Island Water lab · BOD5 10 mg/L, TSS 9 mg/L, pH 7.1, Ammonia (NH3-N) 0.8 mg/L, Total nitrogen 6.5 mg/L, Total phosphorus 2.1 mg/L, Fecal coliform 138 per 100 mL, Turbidity 2.10 NTU
Nov 2, 2026 · Drinking Water Plant (RO Plant) · Island Water lab · Free chlorine 1.27 mg/L, Total chlorine 1.09 mg/L, pH 7.2, Turbidity 0.13 NTU, TDS 288 mg/L, Conductivity 402 µS/cm, Total coliform Absent per 100 mL, E. coli Absent per 100 mL
Oct 26, 2026 · Wastewater Plant · Island Water lab · BOD5 16 mg/L, TSS 14 mg/L, pH 7.6, Ammonia (NH3-N) 1.1 mg/L, Total nitrogen 7.4 mg/L, Total phosphorus 1.5 mg/L, Fecal coliform 158 per 100 mL, Turbidity 2.15 NTU
Oct 26, 2026 · Drinking Water Plant (RO Plant) · Island Water lab · Free chlorine 0.97 mg/L, Total chlorine 1.68 mg/L, pH 7.5, Turbidity 0.30 NTU, TDS 281 mg/L, Conductivity 540 µS/cm, Total coliform Absent per 100 mL, E. coli Absent per 100 mL
Oct 19, 2026 · Wastewater Plant · Island Water lab · BOD5 15 mg/L, TSS 13 mg/L, pH 7.1, Ammonia (NH3-N) 1.3 mg/L, Total nitrogen 8.1 mg/L, Total phosphorus 3.3 mg/L, Fecal coliform 133 per 100 mL, Turbidity 2.73 NTU
Oct 19, 2026 · Drinking Water Plant (RO Plant) · Island Water lab · Free chlorine 1.08 mg/L, Total chlorine 1.47 mg/L, pH 7.7, Turbidity 0.11 NTU, TDS 181 mg/L, Conductivity 446 µS/cm, Total coliform Absent per 100 mL, E. coli Absent per 100 mL
Oct 12, 2026 · Wastewater Plant · Island Water lab · BOD5 10 mg/L, TSS 12 mg/L, pH 7.3, Ammonia (NH3-N) 1.0 mg/L, Total nitrogen 7.3 mg/L, Total phosphorus 2.0 mg/L, Fecal coliform 111 per 100 mL, Turbidity 2.48 NTU
Oct 12, 2026 · Drinking Water Plant (RO Plant) · Island Water lab · Free chlorine 1.35 mg/L, Total chlorine 1.76 mg/L, pH 7.3, Turbidity 0.13 NTU, TDS 195 mg/L, Conductivity 542 µS/cm, Total coliform Absent per 100 mL, E. coli Absent per 100 mL
Oct 5, 2026 · Wastewater Plant · Island Water lab · BOD5 15 mg/L, TSS 6 mg/L, pH 7.5, Ammonia (NH3-N) 0.6 mg/L, Total nitrogen 6.2 mg/L, Total phosphorus 2.2 mg/L, Fecal coliform 128 per 100 mL, Turbidity 1.79 NTU
Oct 5, 2026 · Drinking Water Plant (RO Plant) · Island Water lab · Free chlorine 1.38 mg/L, Total chlorine 1.53 mg/L, pH 7.2, Turbidity 0.31 NTU, TDS 192 mg/L, Conductivity 506 µS/cm, Total coliform Absent per 100 mL, E. coli Absent per 100 mL
Sep 28, 2026 · Wastewater Plant · Island Water lab · BOD5 6 mg/L, TSS 16 mg/L, pH 7.0, Ammonia (NH3-N) 1.2 mg/L, Total nitrogen 9.5 mg/L, Total phosphorus 2.3 mg/L, Fecal coliform 93 per 100 mL, Turbidity 2.18 NTU
Sep 28, 2026 · Drinking Water Plant (RO Plant) · Island Water lab · Free chlorine 1.32 mg/L, Total chlorine 1.84 mg/L, pH 7.6, Turbidity 0.24 NTU, TDS 257 mg/L, Conductivity 446 µS/cm, Total coliform Absent per 100 mL, E. coli Absent per 100 mL
Sep 21, 2026 · Wastewater Plant · Island Water lab · BOD5 9 mg/L, TSS 10 mg/L, pH 7.3, Ammonia (NH3-N) 1.8 mg/L, Total nitrogen 6.4 mg/L, Total phosphorus 1.3 mg/L, Fecal coliform 80 per 100 mL, Turbidity 6.80 NTU
Sep 21, 2026 · Drinking Water Plant (RO Plant) · Island Water lab · Free chlorine 1.34 mg/L, Total chlorine 1.34 mg/L, pH 7.6, Turbidity 0.24 NTU, TDS 252 mg/L, Conductivity 477 µS/cm, Total coliform Absent per 100 mL, E. coli Absent per 100 mL
Sep 14, 2026 · Wastewater Plant · Island Water lab · BOD5 15 mg/L, TSS 9 mg/L, pH 7.0, Ammonia (NH3-N) 0.9 mg/L, Total nitrogen 10.6 mg/L, Total phosphorus 2.0 mg/L, Fecal coliform 37 per 100 mL, Turbidity 1.62 NTU
Sep 14, 2026 · Drinking Water Plant (RO Plant) · Island Water lab · Free chlorine 1.60 mg/L, Total chlorine 1.28 mg/L, pH 7.2, Turbidity 0.13 NTU, TDS 226 mg/L, Conductivity 536 µS/cm, Total coliform Absent per 100 mL, E. coli Absent per 100 mL
Sep 7, 2026 · Wastewater Plant · Island Water lab · BOD5 14 mg/L, TSS 15 mg/L, pH 7.5, Ammonia (NH3-N) 1.0 mg/L, Total nitrogen 8.8 mg/L, Total phosphorus 3.3 mg/L, Fecal coliform 64 per 100 mL, Turbidity 3.25 NTU
Sep 7, 2026 · Drinking Water Plant (RO Plant) · Island Water lab · Free chlorine 1.24 mg/L, Total chlorine 1.38 mg/L, pH 7.4, Turbidity 0.15 NTU, TDS 297 mg/L, Conductivity 368 µS/cm, Total coliform Absent per 100 mL, E. coli Absent per 100 mL
Aug 31, 2026 · Wastewater Plant · Island Water lab · BOD5 10 mg/L, TSS 14 mg/L, pH 7.2, Ammonia (NH3-N) 0.7 mg/L, Total nitrogen 11.7 mg/L, Total phosphorus 2.4 mg/L, Fecal coliform 100 per 100 mL, Turbidity 3.42 NTU
Aug 31, 2026 · Drinking Water Plant (RO Plant) · Island Water lab · Free chlorine 1.26 mg/L, Total chlorine 1.76 mg/L, pH 7.5, Turbidity 0.37 NTU, TDS 226 mg/L, Conductivity 411 µS/cm, Total coliform Absent per 100 mL, E. coli Absent per 100 mL
Aug 24, 2026 · Wastewater Plant · Island Water lab · BOD5 8 mg/L, TSS 15 mg/L, pH 7.3, Ammonia (NH3-N) 1.2 mg/L, Total nitrogen 10.5 mg/L, Total phosphorus 1.3 mg/L, Fecal coliform 49 per 100 mL, Turbidity 2.33 NTU
Aug 24, 2026 · Drinking Water Plant (RO Plant) · Island Water lab · Free chlorine 1.39 mg/L, Total chlorine 1.98 mg/L, pH 7.4, Turbidity 0.22 NTU, TDS 299 mg/L, Conductivity 538 µS/cm, Total coliform Absent per 100 mL, E. coli Absent per 100 mL

＋ Enter test results

Plant Test dateLabSample point Counts as this required test

Parameter	Result	Unit	Limit

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Findings 12 of 12

Drinking Water Plant (RO Plant)

Pre-treatment

MMF-2 · Multimedia filters

🟡 Updated Island Water Complete

ConditionBackwash valve slow to close; pressure drop across the filter above normal.

Corrective actionRebuild the valve actuator and check the backwash timer.

Latest update · Sep 24, 2026 · GuestActuator rebuilt and timer reset; pressure drop back to normal.

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CF-1 · Cartridge filters

🟡 Updated Island Water In Progress

ConditionCartridges changed later than the schedule.

Corrective actionKeep a change log at the housing and order a spare set.

Latest update · Sep 25, 2026 · GuestChange log started; spare set on order.

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RO trains

HPP-B · Train B

Island Water Open

ConditionHigh-pressure pump seal weeping.

Corrective actionReplace the mechanical seal at the next planned shutdown.

Latest updateNo response recorded yet.

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RO-A · Train A

🟡 Updated Island Water / TPU In Progress

ConditionNormalized permeate flow down about 12% since spring.

Corrective actionClean-in-place and send a membrane for autopsy if flow does not recover.

Latest update · Sep 27, 2026 · GuestCIP done; flow up 8%. Watching for two more weeks.

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Post-treatment

CL-1 · Chlorine dosing

🟡 Updated TPU Complete

ConditionDosing pump has no spare on site.

Corrective actionBuy a spare pump and keep it in the store.

Latest update · Sep 28, 2026 · GuestSpare pump delivered and shelved.

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Storage

TK-B · Tank B

TPU Open

ConditionHatch seal perished; small gap at the roof hatch.

Corrective actionReplace the hatch gasket and add a lock.

Latest updateNo response recorded yet.

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Wastewater Plant

Headworks

BS-1 · Bar screen

🟡 Updated Island Water Complete

ConditionScreenings bin overfilling at weekends.

Corrective actionAdd a Saturday empty to the rota.

Latest update · Sep 30, 2026 · GuestSaturday empty added.

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Aeration

BL-2 · Basin 2

🟡 Updated Island Water Complete

ConditionBlower 2 running hot; filter dirty.

Corrective actionClean the intake filter and log blower temperatures weekly.

Latest update · Oct 1, 2026 · GuestFilter cleaned; temperatures logged weekly.

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DO-1 · Basin 1

🟡 Updated Island Water In Progress

ConditionDissolved oxygen probe reading low against the hand meter.

Corrective actionCalibrate the probe and replace the membrane cap.

Latest update · Oct 2, 2026 · GuestProbe calibrated; new cap on order.

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Clarifier

CL-W1 · Clarifier 1

TPU Open

ConditionScum baffle bracket corroded.

Corrective actionReplace the bracket with stainless.

Latest updateNo response recorded yet.

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Disinfection

UV-1 · UV channel

🟡 Updated Island Water Noted

ConditionTwo UV lamps past their rated hours.

Corrective actionReplace the lamps and record the hours.

Latest update · Oct 4, 2026 · GuestLamps ordered with the quarterly parts.

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Effluent

EP-1 · Irrigation pond

🟡 Updated TPU Complete

ConditionFence gate does not latch.

Corrective actionFix the latch and add a sign.

Latest update · Oct 5, 2026 · GuestLatch fixed and sign up.

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